Hi, Nate Taylor here. Please reach out to me at nate@sscycleworks.com for inquiries on parts availabilities and shipping estimates.
Seat post shims
Seat post shims on this page:
Starting seat tube diameter and resulting shimmed diameter:
29.8mm down to 27.2mm
29.4mm down to 25.4mm
29.0mm down to 26.4mm
28.0mm & 26.4mm to 25.4mm
27.2mm down to 25.4mm
25.4mm down to 25.0mm
29.8mm down to 27.2mm seat post shim. New, $15.00/each
Part# 41233

USE 29.4mm down to 25.4mm carbon fiber shim. New, $20.00/each
Part# 41231

You won't be adding too much weight with this shim.

Here's another look at the shim.

It's made for a frme with a 29.4mm set tube,
29.0mm down to 26.4mm alloy shim. Used, $15.00/each

So there's no doubt about its size.

Here's the other side of the shim.
Tranz X 28.0mm & 26.4mm to 25.4mm alloy shim. New, $15.00/set
Part# 41232

Two shims

Here are the shims out of their package

Fit together
27.2mm down to 25.4mm alloy shim. New, $15.00/each
Part# 41226

Side view

From a different angle
USE 25.4mm to 25.0mm aluminum shim. New, $15.00/each
Part# 41236
We have two in stock.

New, in the box.

It's for a frame with a 25.4mm seat tube.

Some important info
